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UNITE sans PATENT H. RICHARDS, 0F WEST ROXBURY, MASSACHUSETTS, ASSIGNOR TO C. G. PLUMPTON.

FORGING-MACHINE.

Specification of Letters Patent No.

chine. Fig. II, is a side elevation of the same. Fig. III, is an end view of the bevel faced anvils. Fig. IV, is a top view, showing the relative position of the hammer, its attached traversing guide and pin, and the guide bars. The Same letters refer to the same parts in all the figures.

The various parts of my improved ma- .chine for forging iron and other metals are so constructed and arranged as to produce an elongation or drawing of the metal, while it is at the same time subjected to the action of dies, swages or anvils of such form as will give the desired shape and length to the article, thus manufactured.

The frame of the machine, which should be of iron to insure sufficient strength, is seen at A, having bolted to one of its sides, at F, an arm or hanger E, which gives support to the first and loose pulleys C, and B, and to the shaft D. Attached to this shaft D, there is a crank or eccentric Gr Gr, which is so connected to the top of two upright` bars or rods H, H as to cause them to rise and fall at each revolut-ion of the shaft. The lower ends of the bars H, enter the hammer I I, and are securely bolted to its upper surface; this hammer extends from one side to the other of the machine, its length being a little less than the breadth of the machine, in order to allow space at each of its ends, for the sliding or traversing guides K K, and the vertical guide bars L.

The construction of this part of the machine is more fully shown in the top view Fig. IV; the lower ends of the bars I-I are seen bolted to the top of the hammer I; at each end of the hammer there is a sliding piece K, K', on the outer side of which there are two vertical grooves, adapted so as to fit, and move freely upon the two vertical guide bars L L, which are securely fas- 9,266, dated September 14, 1852.

tened to the frame A, of the machine. At each end of the hammer I, there is a round hole, or bearing fitted to receive the round pin or dowel M; the other end of this pin being properly secured in the sliding guide K; this guide K and hammer I being thus attached to each other will traverse the same distance while rising and falling, while at the same time the face of the'hammer or the face of a swage, J, attached to the bottom of the hammer will have an alternate motion to the right and to the left as seen in the end view, Fig. II, the face taking the direction shown by the red line, at each revolution of the eccentric, or crank. If preferred, the pin or fulcrum M, may be affixed to the hammer I, and left free to turn slightly, in the sliding guide K. If the pin M be placed nearer to the top of the hammer, the deviation of the bottom or face of the hammer (when at its lowest point) from a horizontal line will be greater; if placed lower as shown by the dotted lines (Fig. II) it will be diminished. The extent of this deviation from a horizontal line, as well as the shape of the curve described by a marking point projecting from the end of the hammer will also depend upon the position of the periphery of the eccentric with reference to its center of motion. It will also be observed that the distance traversed, to and fro, in the direction of the arrows (Fig. II) is greater when the pin or fulcrum M is near the top of the hammer and less when it is nearer to the bottom; therefore, by changing the position of the pin I can increase or diminish the drawing effect of the hammer upon the heated iron. The iron S (Fig. II) to be operated upon, is placed in any suitable holder or support as at R, Q, and confined by a setscrew T, or in any other convenient manner, it is supported below by the detached anvils and swages O, N, or the anvil may extend across the whole breadth of the machine, as at P P, (Fig. I), its upper surface being horizontal; or it may be inclined from the front to the back as shown at V (Figs. II and III) or inclined in the opposite direction, as at U (Fig. III), the direction of this slope serving to increase or diminish the drawing action of the hammer.

Swages having various shapes, and formed with reference to their curvilinear motions,

may be used for giving tapered or other forms to the manufactured article.

I claim- The sliding guide traversing upon the side 5 bars, as described, having a pin, pvot or fulcrum, one end of which is attached to the sliding guide While the other end enters the end of the hammer, in which it is so tted as to allow the hammer to turn a short distance, when power is applied to it by means 10 of the crank,`cam or eccentric and the conmeeting-rods, H.

GEO. H. RICHARDS. [1.. s] Witnesses:

HENRY RICHARDS, JOHN M. BATCHELDER. 

